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Lesson 1
Lesson 1 - Perimeter of a Shape
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Slide 1:
Tekstslide
Mathematics
Lower Secondary (Key Stage 3)
In deze les zitten
49 slides
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interactieve quizzen
en
tekstslides
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Lesduur is:
50 min
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Lesson 1 - Perimeter of a Shape
Slide 1 - Tekstslide
Slide 2 - Tekstslide
Slide 3 - Tekstslide
Slide 4 - Tekstslide
Slide 5 - Tekstslide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
Slide 6 - Tekstslide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
23
17
27
32
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
Slide 7 - Tekstslide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
23
17
27
32
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
15
1
2
19
Slide 8 - Tekstslide
Explain what we mean by the perimeter of a shape.
Slide 9 - Open vraag
Slide 10 - Tekstslide
Slide 11 - Tekstslide
The points are selected so that the line segment is approximately straight.
Slide 12 - Tekstslide
Slide 13 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
Slide 14 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
_ _ _ _ _ _ _ _ _ _ _ _ _ _.
2. Each square has a side length of _ _ _ _ _ _ _ _ _ _.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 15 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of _ _ _ _ _ _ _ _ _ _.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 16 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 17 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
ISOSCELES
triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 18 - Tekstslide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
ISOSCELES
triangle.
4. The two equal sides each have a length of
2 m
.
Slide 19 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Slide 20 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a square = 3 + 3 = 6m
Slide 21 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a square = 3 + 3 = 6m
The perimeter part of 4 squares = 4 x 6 = 24m
Slide 22 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a triangle = 2 + 2 = 4m
Slide 23 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a triangle = 2 + 2 = 4m
The perimeter part of 4 triangles = 4 x 4 = 16m
Slide 24 - Tekstslide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The total perimeter = 24 + 16 =
40m
Slide 25 - Tekstslide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
5 : 20 : 50
10 : 100 : 1000
3a : 9
24t : 60
Slide 26 - Tekstslide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
3 : 7
2 : 5
1 : 5
2 : 5
5 : 20 : 50
10 : 100 : 1000
3a : 9
24t : 60
Slide 27 - Tekstslide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
3 : 7
2 : 5
1 : 5
2 : 5
5 : 20 : 50
1 : 4 : 10
10 : 100 : 1000
3a : 9
a : 3
24t : 60
3t : 5
1 : 10 : 100
Slide 28 - Tekstslide
Explain what we mean by the perimeter of a shape.
Slide 29 - Open vraag
Would you be able to explain what is meant by the perimeter of a shape?
Yes I would be able to explain what the perimeter is of ANY shape
I would be able to explain what is the perimeter of simple shapes such as rectangles
I do not understand what is the perimeter of a shape.
Slide 30 - Poll
Slide 31 - Tekstslide
A
A
B
B
C
C
D
D
Slide 32 - Quizvraag
Slide 33 - Tekstslide
A
6 units
B
6 squares
C
7 units
D
7 squares
Slide 34 - Quizvraag
Slide 35 - Tekstslide
A
17 units
B
18 units
C
19 units
D
20 units
Slide 36 - Quizvraag
Slide 37 - Tekstslide
A
48 cm squared
B
43 cm
C
43 cm squared
D
48 cm
Slide 38 - Quizvraag
Slide 39 - Tekstslide
A
24 cm
B
11 cm
C
22 cm
D
16 cm
Slide 40 - Quizvraag
Slide 41 - Tekstslide
Slide 42 - Tekstslide
INDEPENDENT STUDY
TITLE
- Unit 11 Week 1 - Lesson 1 - Perimeters
INSTRUCTIONS
-
Glue the question sheet into your book and then answer the questions.
If there is not enough room to write your answers on the sheet, write them in your book.
Show all of your working out.
Slide 43 - Tekstslide
Slide 44 - Tekstslide
Slide 45 - Tekstslide
Slide 46 - Tekstslide
Slide 47 - Tekstslide
Slide 48 - Tekstslide
Slide 49 - Tekstslide
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